CTE “warning signs” existed before former Broncos RB Rob Lytle’s death in 2010

This was the scene on the goal line in Denver on Sunday, Jan. 1, 1978 when Jack Tatum (32) of the Raiders knocked the ball out of the hands of Rob Lytle of the Broncos. Willie Hall (39) of the Raiders picked up the ball and took off but officials ruled it was not a rumble, setting up a Bronco touchdown in their 20-17 victory over Oakland in the AFC Championship game. (AP Photo)